Exercise device



FIG. 1 is a perspective view of an exercise device.

FIG. 2 is top view of the exercise device as shown in FIG. 1.

FIG. 3 is a bottom view of the exercise device as shown in FIG. 1.

FIG. 4 is a front view of the exercise device shown in FIG. 1, the rear view being substantially identical; and,

FIG. 5 is a first end view of the exercise device shown in FIG. 1, the opposite end view being substantially identical. 

CLAIM The ornamental design for an exercise device, substantially as shown and described. 